Burger King Will Start DNA Testing for Horse Meat

Burger King pledges that DNA testing will ensure that its "BK Quad Stacker" hamburger has four provably all-beef patties Photograph by Paul J. Richards/AFP via Getty Images

Just to be clear: Burger King says there is no horse meat in its burgers. And just to make sure, Burger King tells Bloomberg Businessweek, it plans to test its beef patties for foreign DNA, including horse, pork, and lamb.

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